Flaky-test: ProducerConsumerInternalTest.testExclusiveConsumerWillAlwaysRetryEvenIfReceivedConsumerBusyError

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.

### Example failures

- [2023-11-01T23:47:34.3601084Z](https://github.com/apache/pulsar/actions/runs/6726225527/job/18282371976#step:10:1551)
- [2023-10-30T14:02:56.8701471Z](https://github.com/apache/pulsar/actions/runs/6693353223/job/18185623275#step:10:1551)

### Exception stacktrace

```
org.awaitility.core.ConditionTimeoutException: Assertion condition defined as a org.apache.pulsar.client.impl.ProducerConsumerInternalTest expected [Ready] but found [Connecting] within 10 seconds.
at org.awaitility.core.ConditionAwaiter.await(ConditionAwaiter.java:167)
at org.awaitility.core.AssertionCondition.await(AssertionCondition.java:119)
at org.awaitility.core.AssertionCondition.await(AssertionCondition.java:31)
at org.awaitility.core.ConditionFactory.until(ConditionFactory.java:985)
at org.awaitility.core.ConditionFactory.untilAsserted(ConditionFactory.java:769)
at org.apache.pulsar.client.impl.ProducerConsumerInternalTest.testExclusiveConsumerWillAlwaysRetryEvenIfReceivedConsumerBusyError(ProducerConsumerInternalTest.java:139)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:139)
at org.testng.internal.invokers.InvokeMethodRunnable.runOne(InvokeMethodRunnable.java:47)
at org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:76)
at org.testng.internal.invokers.InvokeMethodRunnable.call(InvokeMethodRunnable.java:11)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.AssertionError: expected [Ready] but found [Connecting]
at org.testng.Assert.fail(Assert.java:110)
at org.testng.Assert.failNotEquals(Assert.java:1577)
at org.testng.Assert.assertEqualsImpl(Assert.java:149)
at org.testng.Assert.assertEquals(Assert.java:131)
at org.testng.Assert.assertEquals(Assert.java:643)
at org.apache.pulsar.client.impl.ProducerConsumerInternalTest.lambda$testExclusiveConsumerWillAlwaysRetryEvenIfReceivedConsumerBusyError$4(ProducerConsumerInternalTest.java:140)
at org.awaitility.core.AssertionCondition.lambda$new$0(AssertionCondition.java:53)
at org.awaitility.core.ConditionAwaiter$ConditionPoller.call(ConditionAwaiter.java:248)
at org.awaitility.core.ConditionAwaiter$ConditionPoller.call(ConditionAwaiter.java:235)
... 4 more

```

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Start with ProducerConsumerInternalTest.java, especially testExclusiveConsumerWillAlwaysRetryEvenIfReceivedConsumerBusyError at lines 139-140, and reproduce the failure using the reported test. Inspect why the producer or consumer remains Connecting instead of reaching Ready; done means the test reliably reaches Ready without the reported timeout.

Written by the indexing model from the issue text.